CN112485543A - Electric field detection device based on waveguide propagation characteristic change - Google Patents
Electric field detection device based on waveguide propagation characteristic change Download PDFInfo
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- CN112485543A CN112485543A CN202011265670.8A CN202011265670A CN112485543A CN 112485543 A CN112485543 A CN 112485543A CN 202011265670 A CN202011265670 A CN 202011265670A CN 112485543 A CN112485543 A CN 112485543A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
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Abstract
The invention provides an electric field detection device based on waveguide propagation characteristic change, which comprises a substrate layer, a heating layer, a first noble metal part, a second noble metal part and an organic conjugated polymer material, wherein the heating layer is arranged on the substrate layer, the first noble metal part and the second noble metal part are arranged on the heating layer, a gap is arranged between the first noble metal part and the second noble metal part to form a metal-medium-metal waveguide, and the organic conjugated polymer material is arranged in the gap. The invention has the advantage of high electric field detection sensitivity.
Description
Technical Field
The invention relates to the field of electric field detection, in particular to an electric field detection device based on waveguide propagation characteristic change.
Background
The measurement of the electric field has great significance for launching missiles, rockets and aircrafts, and also has wide application in places which are easy to cause static electricity and are easy to be damaged by static electricity and radars on the ground, such as urban environmental pollution, ultra-clean laboratories, oil refineries, oil storage stations and the like. The traditional electric field measuring device has low sensitivity, and the exploration of an electric field detection technology based on a new principle has important significance for improving the sensitivity of electric field measurement.
Disclosure of Invention
In order to solve the above problems, the present invention provides an electric field detection apparatus based on waveguide propagation characteristic changes, including a substrate layer, a heating layer, a first noble metal portion, a second noble metal portion, and an organic conjugated polymer material, wherein the heating layer is disposed on the substrate layer, the first noble metal portion and the second noble metal portion are disposed on the heating layer, a gap is disposed between the first noble metal portion and the second noble metal portion to form a metal-dielectric-metal waveguide, and the organic conjugated polymer material is disposed in the gap.
Further, the organic conjugated polymer material is poly-3-hexylthiophene.
Further, the organic conjugated polymer material fills the gap.
Further, the bottom of the gap is narrow and the top of the gap is wide.
Further, the organic conjugated polymer material covers the first noble metal part and the second noble metal part near the top of the gap.
Further, at the gap, the first noble metal portion is low; away from the gap, the first noble metal portion is high.
Further, at the gap, the second noble metal portion is low; away from the gap, the second noble metal portion is high.
Further, the material of the first noble metal part and the second noble metal part is gold or silver.
Further, the width of the widest part of the gap is less than 100 nm.
Still further, the height of the gap is less than 2 microns.
The invention has the beneficial effects that: the invention provides an electric field detection device based on waveguide propagation characteristic change, which comprises a substrate layer, a heating layer, a first noble metal part, a second noble metal part and an organic conjugated polymer material, wherein the heating layer is arranged on the substrate layer, the first noble metal part and the second noble metal part are arranged on the heating layer, a gap is arranged between the first noble metal part and the second noble metal part to form a metal-medium-metal waveguide, and the organic conjugated polymer material is arranged in the gap. When the method is applied, firstly, the propagation characteristic of the metal-medium-metal waveguide is measured in a space without an electric field, and the heating layer is at normal temperature; then, the invention is placed in an electric field to be tested, the organic conjugated polymer material is heated by the heating layer at the same time, after the organic conjugated polymer material is heated for a period of time, the organic conjugated polymer material is cooled, the propagation characteristic of the metal-medium-metal waveguide is measured again, and the electric field to be tested is determined according to the change of the propagation characteristic of the metal-medium-metal waveguide before and after the measurement. In the heating process, the direction of the molecular chain of the organic conjugated polymer material is changed by the electric field to be measured, so that the dielectric environment in the gap is changed, and the propagation characteristic of the metal-medium-metal waveguide is changed. The invention has the advantage of high electric field detection sensitivity because the direction of the molecular chain of the organic conjugated polymer material is heavily dependent on the electric field in which the organic conjugated polymer material is positioned when the organic conjugated polymer material is heated, and the propagation characteristic of the metal-medium-metal waveguide is heavily dependent on the dielectric environment in the gap.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of an electric field detection apparatus based on changes in waveguide propagation characteristics.
Fig. 2 is a schematic diagram of another electric field detection device based on waveguide propagation characteristic changes.
Fig. 3 is a schematic diagram of another electric field detection apparatus based on waveguide propagation characteristic variation.
Fig. 4 is a schematic diagram of another electric field detection apparatus based on waveguide propagation characteristic variation.
In the figure: 1. a base layer; 2. a heating layer; 3. a first noble metal section; 4. a second noble metal section; 5. an organic conjugated polymer material.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.
Example 1
The invention provides an electric field detection device based on waveguide propagation characteristic change. FIG. 1 is a cross-sectional view of the present invention. The electric field detection device based on waveguide propagation characteristic change comprises a substrate layer 1, a heating layer 2, a first precious metal part 3, a second precious metal part 4 and an organic conjugated polymer material 5. Heating layer 2 is disposed on substrate layer 1. The material of the substrate layer 1 is a heat insulating material for insulating heat generated by the heating layer 2. The heating layer 2 may generate a high temperature by a method of connecting other high temperature objects, and may also generate a high temperature by generating heat through a resistor, which is not particularly limited herein. The first noble metal part 3 and the second noble metal part 4 are arranged on the heating layer 2, and a gap is arranged between the first noble metal part 3 and the second noble metal part 4 to form a metal-dielectric-metal waveguide. The material of the first noble metal section 3 and the second noble metal section 4 is gold or silver so as to form surface plasmon polaritons within the gap. An organic conjugated polymer material 5 is disposed in the gap. Further, the organic conjugated polymer material 5 fills the gap, so that when the micro-morphology of the organic conjugated polymer material 5 changes, the propagation characteristics of the metal-dielectric-metal waveguide can be changed more. The organic conjugated polymer material 5 is poly-3-hexylthiophene. When the electric field is heated, the micro appearance of the poly-3-hexylthiophene is easier to be regulated and controlled by the electric field to be measured.
When the method is applied, firstly, the propagation characteristic of the metal-medium-metal waveguide is measured in a space without an electric field, and the heating layer 2 is at normal temperature; specifically, coupling continuous spectrum laser into one end of the metal-medium-metal waveguide, and measuring a transmission spectrum at the other end of the metal-medium-metal waveguide, thereby determining the propagation characteristic of the metal-medium-metal waveguide; then, the invention is placed in an electric field to be tested, the heating layer 2 heats the organic conjugated polymer material 5 at the same time, after the heating lasts for a period of time, the organic conjugated polymer material 5 is cooled, the propagation characteristic of the metal-medium-metal waveguide is measured again, and the electric field to be tested is determined according to the change of the propagation characteristic of the metal-medium-metal waveguide before and after the measurement. The heating is carried out at a temperature greater than 130 degrees celsius for a time greater than 30 minutes to facilitate sufficient modification of the microstructure of the organic conjugated polymeric material 5. In the heating process, the electric field to be measured changes the direction of the molecular chain of the organic conjugated polymer material 5, so that the dielectric environment in the gap is changed, and the propagation characteristic of the metal-medium-metal waveguide is changed. Since the direction of the molecular chain of the organic conjugated polymer material 5 is heavily dependent on the electric field in which it is exposed when heating, and the propagation characteristic of the metal-dielectric-metal waveguide is heavily dependent on the dielectric environment in the gap, the present invention has the advantage of high electric field detection sensitivity.
In the present invention, on the one hand, the propagation characteristics of the metal-dielectric-metal waveguide are heavily dependent on the dielectric environment within the gap; on the other hand, the first noble metal part 3 and the second noble metal part 4 are also good conductors of heat, and can favorably transfer heat to the organic conjugated polymer material 5, thereby changing the direction of molecular chains in the organic conjugated polymer material 5 more. The two effects are beneficial to changing the propagation characteristics of the metal-medium-metal waveguide more, so that the electric field detection with higher sensitivity is realized.
Example 2
On the basis of example 1, the bottom of the gap was narrow and the top of the gap was wide. In this way, the electromagnetic field in the gap is concentrated mainly at the bottom of the gap. When the heating layer 2 heats the organic conjugated polymer material 5, the temperature at the bottom of the gap is higher, the molecular chain direction of the organic conjugated polymer material 5 is changed more, and the propagation characteristics of the metal-dielectric-metal waveguide are changed more due to the two effects, so that the detection with higher sensitivity of the electric field is realized. Further, as shown in fig. 2, the gap is formed in a V shape, and at the bottom of the gap, the first noble metal portion 3 and the second noble metal portion 4 are in contact, so that the electromagnetic field in the gap is more concentrated, and the change of the micro-morphology of the organic conjugated polymer material 5 changes more on the propagation characteristic of the metal-dielectric-metal waveguide, thereby realizing more sensitive electric field detection.
Example 3
In addition to example 2, as shown in fig. 3, the organic conjugated polymer material 5 covers the first noble metal part 3 and the second noble metal part 4 in the vicinity of the top of the gap. That is, the organic conjugated polymer material 5 not only fills the gap but also covers the top of the gap. The organic conjugated polymer material 5 at the top of the gap acts to concentrate the electromagnetic field even further, i.e. the electromagnetic field distribution within the gap is more concentrated. Therefore, the change of the micro-morphology of the organic conjugated polymer material 5 in the gap changes the propagation characteristics of the metal-dielectric-metal waveguide more, and the electric field detection with higher sensitivity is realized. In addition, the provision of the organic conjugated polymer material 5 also at the top of the gap is simpler to prepare than merely filling the gap with the organic conjugated polymer material 5.
Example 4
On the basis of example 3, as shown in fig. 4, the first noble metal part 3 is low at the gap; away from the gap, the first noble metal portion 3 is high; at the gap, the second noble metal part 4 is low; away from the gap, the second noble metal portion 4 is high. Thus, when the organic conjugated polymer material 5 is heated, the organic conjugated polymer material 5 can be stably positioned at the top of the gap, and the structural stability is improved. The change of the metal-medium-metal waveguide propagation characteristics is only caused by the change of the microstructure of the organic conjugated polymer material 5, so that the data processing difficulty is reduced.
Further, the width at the widest part of the gap is less than 100 nm and the height of the gap is less than 2 μm, so that the surface plasmon polaritons are concentrated in the gap.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The utility model provides an electric field detection device based on waveguide propagation characteristic changes, its characterized in that includes stratum basale, zone of heating, first noble metal portion, second noble metal portion, organic conjugated polymer material, the zone of heating is arranged in on the stratum basale, first noble metal portion with the second noble metal portion is arranged in on the zone of heating, be equipped with the clearance between first noble metal portion with the second noble metal portion, form metal-medium-metal waveguide, organic conjugated polymer material is arranged in the clearance.
2. An electric field sensing device based on waveguide propagation property variation as claimed in claim 1, wherein: the organic conjugated polymer material is poly-3-hexylthiophene.
3. An electric field sensing device based on waveguide propagation property variation as claimed in claim 2, wherein: the organic conjugated polymer material fills the gap.
4. An electric field sensing device based on waveguide propagation property variation as claimed in claim 3, wherein: the bottom of the gap is narrow and the top of the gap is wide.
5. An electric field sensing device based on waveguide propagation property variation as claimed in claim 4, wherein: the organic conjugated polymer material covers the first noble metal portion and the second noble metal portion near the top of the gap.
6. An electric field sensing device based on waveguide propagation property variation as claimed in claim 5, wherein: at the gap, the first noble metal portion is low; away from the gap, the first noble metal portion is high.
7. An electric field sensing device based on waveguide propagation property variation as claimed in claim 6, wherein: at the gap, the second noble metal portion is low; away from the gap, the second noble metal portion is tall.
8. An electric field sensing device based on changes in the propagation characteristics of a waveguide as claimed in any of claims 1 to 7 wherein: the material of the first noble metal part and the second noble metal part is gold or silver.
9. An electric field sensing device based on waveguide propagation property variation as claimed in claim 8, wherein: the width of the widest part of the gap is less than 100 nanometers.
10. An electric field sensing device based on waveguide propagation property variation as claimed in claim 9, wherein: the height of the gap is less than 2 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265670.8A CN112485543A (en) | 2020-11-13 | 2020-11-13 | Electric field detection device based on waveguide propagation characteristic change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265670.8A CN112485543A (en) | 2020-11-13 | 2020-11-13 | Electric field detection device based on waveguide propagation characteristic change |
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| CN112485543A true CN112485543A (en) | 2021-03-12 |
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| CN202011265670.8A Withdrawn CN112485543A (en) | 2020-11-13 | 2020-11-13 | Electric field detection device based on waveguide propagation characteristic change |
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- 2020-11-13 CN CN202011265670.8A patent/CN112485543A/en not_active Withdrawn
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Application publication date: 20210312 |